Journal of Hydrogen and New Energy (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Analysis of Performance and Energy Saving of a SOFC-Based Hybrid Desiccant Cooling System

건물용 연료전지 기반 하이브리드 제습냉방시스템 성능 및 에너지 절감 분석

  • IN, JUNGHYUN (Power & Energy Science Laboratory, Mechanical Engineering, Hongik University) ;
  • LEE, YULHO (Power & Energy Science Laboratory, Mechanical Engineering, Hongik University) ;
  • KANG, SANGGYU (Korea Institute of Machinery and Materials) ;
  • PARK, SUNGJIN (Power & Energy Science Laboratory, Mechanical Engineering, Hongik University)
  • 인정현 (홍익대학교 기계시스템디자인공학과 동력및에너지기술연구실) ;
  • 이율호 (홍익대학교 기계시스템디자인공학과 동력및에너지기술연구실) ;
  • 강상규 (한국기계연구원 청정연료발전연구실) ;
  • 박성진 (홍익대학교 기계시스템디자인공학과 동력및에너지기술연구실)
  • Received : 2018.11.23
  • Accepted : 2019.04.30
  • Published : 2019.04.30
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Abstract

A solid oxide fuel cell (SOFC) based hybrid desiccant cooling system model is developed to study the effect of fuel utilization rate of the SOFC on the reduction of energy consumption and $CO_2$ emission. The SOFC-based hybrid desiccant cooling system consists of an SOFC system and a Hybrid desiccant cooling system (HDCS). The SOFC system includes a stack and balance of plant (BOP), and HDCS. The HDCS consists of desiccant rotor, indirect evaporative cooler, electric heat pump (EHP), and heat exchangers. In this study, using energy load data of a commercial office building and SOFC-based HDCS model, the amount of ton of oil equivalent (TOE) and ton of $CO_2$ ($tCO_2$) are calculated and compared with the TOE and $tCO_2$ generation of the EHP using grid electricity.

Keywords

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Fig. 2. SOFC system flow

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Fig. 3. Schematic of a hybrid desiccant cooling system

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Fig. 5. Effect of fuel utilization on thermal efficiency

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Fig. 6. Effect of fuel utilization on electrical efficiency

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Fig. 8. tCO2 of both systems at different fuel utilization

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Fig. 1. Schematic of hybrid desiccant cooling system based solid oxide fuel cell

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Fig. 4. Schematic of a indirect evaporative cooier

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Fig. 7. TOE of both systems at different fuel utilization

Table 1. System operation condition11)

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Table 2. Effect of fuel utilization on performance of 10 kW SOFC9)

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Table 3. Performance of hybrid desiccant cooling system

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Table 4. Effect of fuel utilization on performance of HDCS

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Table 5. Effect of fuel utilization on electric consumption and residual electricity of commercial office building in Korea15)

SSONB2_2019_v30n2_136_t0005.png 이미지

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